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o3de/Code/CryEngine/CryCommon/LyShine/Bus/UiCanvasUpdateNotificationB...

37 lines
1.2 KiB
C++

/*
* Copyright (c) Contributors to the Open 3D Engine Project
*
* SPDX-License-Identifier: Apache-2.0 OR MIT
*
*/
#pragma once
#include <AzCore/Component/ComponentBus.h>
////////////////////////////////////////////////////////////////////////////////////////////////////
//! Elements that require update notifications should connect to this bus using the entity id of their
//! containing canvas.
class UiCanvasUpdateNotification
: public AZ::ComponentBus
{
public: // member functions
virtual ~UiCanvasUpdateNotification() {}
//! Update the component. This is called when the game is running.
//! It is different from the TickBus in that it is called only when the canvas is updated.
//! So it is not called if the canvas is disabled.
virtual void Update(float deltaTime) = 0;
//! Update the component while in the editor.
//! This is called every frame when in the editor and the game is NOT running.
virtual void UpdateInEditor(float /*deltaTime*/) {}
public: // static member data
//! Multiple components on a entity can implement the events
static const AZ::EBusHandlerPolicy HandlerPolicy = AZ::EBusHandlerPolicy::Multiple;
};
typedef AZ::EBus<UiCanvasUpdateNotification> UiCanvasUpdateNotificationBus;